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<br />SUMMER POINT MULTIPLIERS (SPM)
<br />
<br />CLIMATE ZONES 4 5 6
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<br />6A.' SUMMER OVERHANG FACTORS (SO =) FOR SINGLE AND DOUBLE ~& ,'''~:-
<br />~r OH RATIO .00-.11 .12-.17 .18-.26 .27-.35" .36-,46 .47-.57 ,58-.70 .71-.83 .84-1.18 1.19-1.72 1.73-2.73 2.74+
<br />N 1.00 .94 .91 .87 .83 .79 .76 .72 .69 .63 .56 .50
<br />NElNW 1.00 .94 .91 .85 ,79 .72 .68 .63 .58 .50 .40 .36
<br />t-a:: E/W 1.00 .95 .92 ,85 .78 .70 .64 ,58 .52 .42 .33 .26
<br />frlo
<br />21l SElSW 1.00 .93 .90 .81 .72 .62 .55 ,49 .42 .33 .27 .22
<br />S 1.00 .91 .87 .77 .67 .57 .50 .45 .39 .32 .28 .25
<br />OH I=Nr.TI-l* Oft. 1 ft lV, ft ?ft 3ft 3% ft. 4% ft. <;'j,ft' flV, ft !Iv, ft 14ft 20ft..
<br /> 'To selecl bv Overhano Lenolh no oart of nlass shall be more than 8 n. below Ihe overhano,
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<br />6A.2 WALL SUMMER POINT MULTIPLIERS lSPM)
<br /> FRAME CONCRETE BLOCK' FACE BRICK LOG
<br /> INT. INSULATION ~XT. INSUl R.VALUE WooDFR
<br /> WOOD STEEL NORMAL WT. NOR. WT. 0-6.9 2.9 61N H
<br />R.VALUE EXT ADJ EXT ADJ R.VALUE EXT ADJ EXT 7-10.9 .6 '... R.VALUE EXT
<br />0-6.9 6.4 2.2 8.9 2.9 0-2.9 2.5 .9 2.5 11-18.9 ,4 0-2.9 1.7
<br />7-10.9 2.3 .8 4.1 1.3 3-4.9 1.4 .7 .7 19-25.9 .2 3-6,9 1.1
<br />11-12.9 1.9 ,7 3,0 1.0 5-6.9 1.0 ,6 .3 26& Un .1 7&Un .8
<br />13-18,9 1,7 .6 2,8 0,9 7-10,9 .8 .4 .1 R-VALUE BLOCK 8 INCH
<br />19-25.9 1.0 .3 2.4 0.8 11-18.9 .4 .3 0 0-2.9 1.0 R.VALUE EXT
<br />26& Uo .6 .2 1.3 0.4 19-25.9 .2 .2 3-6.9 .6 0-2.9 1.0
<br /> 26 & Up ,1 .1 7-9.9 .4 3-6.9 ,8
<br /> 10R.IJn ? Ii </ 7& Un 6
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<br />6A.3 DOOR SUMMER POINT MULTIPLIERS 6A-4 CEILING SUMMER POINT MULTIPLIERS (SPM\
<br />DOOR TYPE EXTERIOR ADJACENT UNDER ATIlC SINGLE ASSEMBLY CONCRETE DECK ROOFING
<br /> R.YALUE SPM R.YALUE SPM CEILING TYPE
<br />WOOD 7,2 2.4 19-219 1.1 10-10.9 3.0 R,VALUE DROPPED EXPOSED
<br /> 22-25.9 .9 11-12.9 2.7 10-13.9 3.0 3.3
<br />INSUlATED 1.6 26-29.9 .7 13-18.9 2.4 14-20.9 2.0 2.1
<br />4,8 30-37.9 .6 19-25.9 1.8 21 & Un 1.4 1.3
<br /> 38 & Up .4 26-29.9 1,1
<br /> ~o R. lJn O!l
<br />6A.S FLOOR SUMMER POINT MULTIPLIERS lSPMl ~
<br />SLAB-oN-GRADE RAISED RAISED WOOIJ2
<br />EDGE INSULATION CONCRETE POST OR PIER STEM WALL wI UNDER ADJACENT
<br /> CONSTRUCTION FLOOR INSULATION
<br />R.VALUE SPM R.VALUE SPM R.VALUE SPM SPM SPM
<br />0-2.9 -31.9 0-2.9 -1.0 0-6.9 0.9 N/A 5.3
<br />3-4.9 -31.8 3-4.9 -1.7 7-10.9 -1,1 -2.8 2,1
<br />5-6.9 -31.7 5-6.9 -1.7 11-18.9 -1,0 -2.2 1.8
<br />7 R.IJn -~1/; 7 R. lJn -17 1!1 R. lJn -0 !I -1.8 1.0
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<br />SPM)
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<br />6A-6 INFILTRATION SUMMER POINT MULTIPLIERS (SPM) 6A.7 DUCT MULTIPLIERS OM
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<br />INFILTRATION PRACTICE SPM
<br />(SEE TABLE 9P\
<br />PRACTICE #1 13.8
<br />PRACTICE #2 10.9
<br /> 7.6
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<br />SUPPLY DUCTSIN
<br />UNCONDITIONED SPACE
<br />
<br />
<br />RETURN DUCTS
<br />IN UNCONDITIONED SPACE
<br />1.14
<br />1.10
<br />1.09
<br />1.10
<br />1.07
<br />
<br />RETURN DUCTS
<br />IN CONDITIONED SPACE
<br />1.10
<br />1.07
<br />1.06
<br />1.00
<br />1.00
<br />
<br />SUPPLY DUCTSIN
<br />ONDITIONED SPACE'
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<br />6A-8 COOLING SYSTEM MULTIPLIERS lCSM)
<br />SYSTEM TYPE COOLING SYSTEM MULTIPLIERS lCSM\
<br />Central Units (SEER) Rating 7.5-7.9 8.0-8.4 ,,8.5-8.8 8.9-9.4 9.5-9.9 10.i)-10.4 10.5-19,9 11.Q-!!A 11,5-11,!1 12.0-12.4
<br />----.. - - CSM .. I ____4.5 .4L. __.40 _ .~- .~. .34 .32 ,31 .30 ,28
<br />PTAC & Room Units (EER) Ratina 12.5-12,9 13.0-13.4 13.5-13.9 14.0-14.4 14.5-14.9 15.0-15.4 15.5-15.9 16.0-16.4 16.5-16.9 17.0-17.4 17.5 & Un
<br />CSM .27 .26 .25 .24 .24 .23 .22 ,21 .21 ,20 .19
<br />MINIMUMS: CENTRAL UNITS-AIR COOLED SPLIT SYSTEM 10,0 SEER, SINGLE PKG, 9,7 SEER. GROUND WATER COOLED 11,0 EER. PTAC-SEE TABLE 6.3,
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<br />6A.9 HOT WATER MULTIPLIERS (HWMI
<br />SYSTEM TYPE HOT WATER MULTIPLIERS (HWM
<br />Electric Resistance EF ,80-,81 .82-.83 ,84-.85 .86-.87 .88-,90 .91-.n ,94-.~. ,[l,8)Jm.
<br />1--- HWM 4183 4081 3984 3891 3803 3678 3560 3450
<br />Natural Gas EF .43-,47 .48-.49 .50.51 .52-.53 .54-,55 .56-.57 .58-.59 .60-.61 .62-.63 .64-,65 .66 & Uo
<br />t:oGas HWM 3098 2775 2664 2562 2467 2379 2297 2220 2138 2081 2018
<br />HWM 4195 3758 3608 3469 3340 3221 3110 3007 2910 2819 2733
<br />Solar EF 1.0-1.9 2.0-2.9 3.0-3.9 4,0-4.9 5,0 & Un
<br />I-lWU .84 d? .28 .21 1<;
<br />
<br />1 FOR MULTIPLIERS FOR OTHER TYPES OF CONCRETE BLOCK CONSTRUCTION SEE SECTION 2.1 OF APPENDIX C, 2 MULTIPLIERS FOR OTHER TYPES OF RAISED WOOD ASSEMBLIES SEE
<br />SECTION 3,1 OF APPENDIX C, 3 DUCTS IN CONDITIONED SPACE NEED TO BE INSULATED ONLY TO THE R-VALUE NECESSARY TO PREVENT CONDENSATION,
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<br />.J-
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